scholarly journals Applied anatomy of the skull in the Arabian horse: A computed tomographic, cross‐sectional, volumetric and morphometric study

2021 ◽  
Author(s):  
Nader Goodarzi ◽  
Omid Zehtabvar ◽  
Mohsen Tohidifar
Keyword(s):  
Morphometric Study ◽  
Cross Sectional ◽  
Computed Tomographic ◽  
Applied Anatomy ◽  
Arabian Horse

scholarly journals Association between Odontogenic and Maxillary Sinus Conditions: A Retrospective Cone-Beam Computed Tomographic Study

2021 ◽  
Vol 10 (13) ◽  
pp. 2849
Author(s):  
Piotr Kuligowski ◽  
Aleksandra Jaroń ◽  
Olga Preuss ◽  
Ewa Gabrysz-Trybek ◽  
Joanna Bladowska ◽  
...  
Keyword(s):  
Bone Loss ◽  
Maxillary Sinus ◽  
Mucous Membrane ◽  
Maxillary Sinusitis ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Odontogenic Infections ◽  
Computed Tomographic ◽  
Periodontal Bone Loss ◽  
Maxillary Sinuses

Odontogenic infections can directly trigger maxillary sinusitis. CBCT is an excellent choice for precise examination of maxillary sinuses and hard tissues within the oral cavity. The objective of this retrospective and the cross-sectional study was to analyze the influence of odontogenic conditions on the presence and intensity of maxillary sinus mucous membrane thickening using CBCT imaging. Moreover, periodontal bone loss and anatomic relationship between adjacent teeth and maxillary sinuses were assessed to evaluate its possible impact on creating maxillary thickening. The study sample consisted of 200 maxillary sinuses of 100 patients visible on CBCT examination with a field of view of 13 × 15 cm. The presented study revealed a significant influence of periapical lesions, inappropriate endodontic treatment, severe caries, and extracted teeth on the presence of increased thickening of maxillary sinus mucous membrane. In addition, an increase in the distance between root apices and maxillary sinus floor triggered a significant reduction of maxillary sinus mucous membrane thickening. The presence of periodontal bone loss significantly increases maxillary sinus mucous membrane thickening.

scholarly journals Role of CT (Computed Tomography) in the Evaluation of Fungal Diseases in Paranasal Sinus

2014 ◽  
Vol 31 (4) ◽  
pp. 189-193
Author(s):  
T Islam ◽  
SA Azad ◽  
ME Karim ◽  
L Khondker ◽  
K Rahman
Keyword(s):  
Fungal Infection ◽  
Ct Scan ◽  
Paranasal Sinus ◽  
Predictive Value ◽  
Cross Sectional Study ◽  
Fungal Diseases ◽  
Cross Sectional ◽  
Computed Tomographic ◽  
Histopathological Result

A cross sectional study carried out with patients having suspected paranasal sinus (PNS) mass during January 2009 to October 2010 to evaluate the fungal diseases in PNS by computed tomographic(CT) image and comparison of the findings of this modality with histopathological result. Among the total 76 patients, the mean age of the patients was 35.95 ± 18.24 and common complaints of the patients were nasal obstruction (73.7%) and maximum 53.9% patients had PNS mass in maxillary sinuses. Out of all cases 10 were diagnosed as having fungal infection/mass by CT scan and confirmed by histopathological evaluation. Two cases were diagnosed as having fungal infection/mass by CT scan but not confirmed by histopathological findings. Of 64 cases of other than fungal infection/mass, which were diagnosed by CT scan, six were confirmed as having fungal infection/mass and 58 were other than having fungal infection/mass by histopathology. Sensitivity of CT scan to diagnose fungal infection/mass was 62.5%, specificity 96.7%, positive predictive value 83.3%, negative predictive value 90.6% and accuracy 89.5%. CT scan of the fungal diseases in paranasal sinus provides more information and better image quality and CT diagnosis correlate well with the findings of histopathology. DOI: http://dx.doi.org/10.3329/jbcps.v31i4.21002 J Bangladesh Coll Phys Surg 2013; 31: 189-193

scholarly journals Relations between vital capacity, CO diffusion capacity and computed tomographic findings of former asbestos-exposed patients: a cross-sectional study

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Alexandra Marita Preisser ◽  
Katja Schlemmer ◽  
Robert Herold ◽  
Azien Laqmani ◽  
Claudia Terschüren ◽  
...  
Keyword(s):  
Vital Capacity ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Diffusion Capacity ◽  
Computed Tomographic

scholarly journals Computed tomographic measures of airway morphology in smokers and never-smoking normals

2014 ◽  
Vol 116 (6) ◽  
pp. 668-673 ◽  
Author(s):  
G. R. Washko ◽  
A. A. Diaz ◽  
V. Kim ◽  
R. G. Barr ◽  
M. T. Dransfield ◽  
...  
Keyword(s):  
Chronic Obstructive Pulmonary Disease ◽  
Chronic Obstructive ◽  
Sectional Area ◽  
Airway Wall ◽  
Cross Sectional ◽  
Obstructive Pulmonary Disease ◽  
Wall Area ◽  
Computed Tomographic ◽  
Airway Morphology ◽  
Central Airway

Bronchial wall area percent (WA% = 100 × wall area/total bronchial cross sectional area) is a standard computed tomographic (CT) measure of central airway morphology utilized in smokers with chronic obstructive pulmonary disease (COPD). Although it provides significant clinical correlations, the range of reported WA% is narrow. This suggests limited macroscopic change in response to smoking or that remodeling proportionally affects the airway wall and lumen dimensions such that their ratio is preserved. The objective of this study is to assess central airway wall area (WA), lumen area (Ai), and total bronchial area (Ao) from CT scans of 5,179 smokers and 92 never smoking normal subjects. In smokers, WA, Ai, and Ao were positively correlated with forced expiratory volume in 1 s (FEV1) expressed as a percent of predicted (FEV1%), and the WA% was negatively correlated with FEV1% ( P < 0.0001 for all comparisons). Importantly, smokers with lower FEV1% tended to have airways of smaller cross-sectional area with lower WA. The increases in the WA% across GOLD stages of chronic obstructive pulmonary disease (COPD) can therefore not be due to increases in WA. The data suggest two possible origins for the WA% increases: 1) central airway remodeling resulting in overall reductions in airway caliber in excess of the decreased WA or 2) those with COPD had smaller native airways before they began smoking. In both cases, these observations provide an explanation for the limited range of values of WA% across stages of COPD.

scholarly journals Measurement of Cross-Sectional Dimensions of the Cricoid Cartilage: A Computed Tomographic Study

2009 ◽  
Vol 118 (4) ◽  
pp. 253-258 ◽  
Author(s):  
Hyun-Woo Shin ◽  
Youngjin Ahn ◽  
Myung-Whun Sung ◽  
Kwang Hyun Kim ◽  
Tack-Kyun Kwon
Keyword(s):  
Cricoid Cartilage ◽  
Cross Sectional ◽  
Computed Tomographic

Quantitative computed tomographic measurement of a cross-sectional area of a small pulmonary vessel in nonsmokers without airflow limitation

2011 ◽  
Vol 29 (4) ◽  
pp. 251-255 ◽  
Author(s):  
Iwao Uejima ◽  
Shin Matsuoka ◽  
Tsuneo Yamashiro ◽  
Kunihiro Yagihashi ◽  
Yasuyuki Kurihara ◽  
...  
Keyword(s):  
Cross Sectional Area ◽  
Airflow Limitation ◽  
Sectional Area ◽  
Cross Sectional ◽  
Pulmonary Vessel ◽  
Computed Tomographic ◽  
Tomographic Measurement

scholarly journals Age-Related Changes in Peripheral Nerves of the Dog. II. A Morphologic and Morphometric Study of Cross-Sectional Nerve

1982 ◽  
Vol 19 (4) ◽  
pp. 379-398 ◽  
Author(s):  
K. G. Braund ◽  
J. A. McGuire ◽  
C. E. Lincoln
Keyword(s):  
Fold Increase ◽  
Morphometric Study ◽  
First Year ◽  
Fiber Density ◽  
Cross Sectional ◽  
Quantitative Measurements ◽  
Age Related ◽  
Large Fiber ◽  
One Year ◽  
First Year Of Life

Qualitative histologic studies and quantitative measurements were made on cross-sectional preparations of common peroneal and ulnar nerves of 32 neuromuscular disease-free dogs from birth to 15 years of age, to provide normative data not available previously. Minimal lesions were seen in nerves of dogs from birth to seven years; however, in older dogs, the incidence of axonal degeneration and segmental demyelination and remyelination increased. Total fiber density of both nerves was over 40,000 fibers/mm2 at birth and declined rapidly during the first six to nine months to level off at about 10,000 fibers/mm2 by one year of age. Density of small (< 5 μm) and large (≥ 5 μm) diameter fibers attained adult values by one year of age. The frequency distribution of the myelinated fibers was unimodal at birth and became bimodal between three and six months of age. The peaks of the small and large fiber groups occurred at 3 μm and 6 μm, respectively. Larger diameter fibers (10 μm to 12 μm) reached adult values between nine months and one year of age. A 2.5 fold increase in mean fiber diameter occurred during the first year of life. There was no statistically significant change in any histometric parameter after maturity (approximately one year of age).

COMPUTED TOMOGRAPHIC AND CROSS-SECTIONAL ANATOMY OF THE NORMAL PACU (COLOSSOMA MACROPONUM)

2014 ◽  
Vol 45 (1) ◽  
pp. 184-189 ◽  
Author(s):  
Alaina Carr ◽  
E. P. Scott Weber ◽  
Chris J. Murphy ◽  
Alison Zwingenberger
Keyword(s):  
Cross Sectional ◽  
Computed Tomographic ◽  
Sectional Anatomy
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